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Friday at the PGA Championship

August 09, 2013 Jason Dufner shot a record 63 Friday to take a two-shot lead after two rounds of the PGA Championship at Oak Hill Country Club in Pittsford, N.Y.

Photos by: AP Photo/Julio Cortez)

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Tiger Woods watches his tee shot on the 13th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

AP Photo/Julio Cortez) Tiger Woods watches his tee shot on the 13th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) Tiger Woods crouches on the 17th green during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) Bubba Watson gets ready to hit as his caddy holds an umbrella over the ball on the 12th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Patrick Semansky) Lee Westwood, of England, waves after saving par on the 16th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) Jim Furyk watches his tee shot on the sixth hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Julio Cortez) Jason Day, of Australia, hits his tee shot on the third hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Phil Mickelson arrives at the 10th tee to start his second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Patrick Semansky) Webb Simpson, right, and Miguel Angel Jimenez, of Spain, walk to the sixth tee during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Adam Scott, of Australia, watches his tee shot on the 10th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Adam Scott, of Australia, celebrates after a birdie on the second hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) Henrik Stenson, of Sweden, reacts after missing a birdie putt on the 13th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Julio Cortez) Kohki Idoki, of Japan, hits out of a bunker on the 11th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) The Wanamaker Trophy sits on the first tee as fans watch golfers on the 18th green during the first round of the PGA Championship at Oak Hill Country Club, Thursday, Aug. 8, 2013, in Pittsford, N.Y.

(AP Photo/Julio Cortez) Tiger Woods reacts after missing a birdie putt on the third hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) Rory McIlroy, of Northern Ireland, reacts after missing a birdie putt on the 11th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Jason Dufner celebrates after a birdie on the 11th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) Henrik Stenson, of Sweden, hits from the fairway on the 13th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Jason Dufner reacts after missing a birdie putt on the 17th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) Jim Furyk takes a drink on the 18th tee during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Patrick Semansky) Robert Garrigus reacts after missing a birdie putt on the 17th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Adam Scott, of Australia, reacts after making a birdie putt on the 13th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Marcus Fraser, of Australia, reacts after missing a birdie putt on the ninth hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) Jim Furyk hits a chip shot on the 17th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) Lee Westwood, of England, hits his tee shot on the 13th hole during the first round of the PGA Championship at Oak Hill Country Club, Thursday, Aug. 8, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) Jim Furyk hits his tee shot on the seventh hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Patrick Semansky) Ryo Ishikawa, of Japan, left, watches his tee shot on the 11th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Phil Mickelson hits his tee shot on the 18th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Patrick Semansky) Fans watch as Bubba Watson putts on the 18th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Steve Stricker waves after a par on the 12th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Patrick Semansky) Fans watch as Bubba Watson chips to the green on the 18th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Hideki Matsuyama, of Japan, hits from the fairway on the eighth hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Julio Cortez) Kohki Idoki, of Japan, reacts after hitting out of a bunker on the 11th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Riedel) Matt Kuchar waves after a par on the 17th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Adam Scott, of Australia, puts on glasses on the sixth hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Charlie Neibergall) Sergio Garcia, of Spain, celebrates after a birdie on the 18th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.

(AP Photo/Julio Cortez) Kohki Idoki, of Japan, hits out of the rough on the 13th hole during the second round of the PGA Championship at Oak Hill Country Club, Friday, Aug. 9, 2013, in Pittsford, N.Y.